$(document).ready(function(){ 
var newImage = new Image(); //预载入图片 
var oldImage = $('.tright1 img').attr('src'); 
newImage.src = 'img/04-.png'; 
$('.tright1 img').hover(function(){ //鼠标滑过图片切换 
$('.tright1 img').attr('src',newImage.src); 
$('.weixin_nr').css('display','block'); 
},
function(){ 
$('.tright1 img').attr('src',oldImage); 
$('.weixin_nr').css('display','none'); 
}); 
});
$(document).ready(function(){ 
var newImage = new Image(); //预载入图片 
var oldImage = $('.tright4 img').attr('src'); 
newImage.src = 'img/05-.png'; 
$('.tright4 img').hover(function(){ //鼠标滑过图片切换 
$('.tright4 img').attr('src',newImage.src); 
}, 
function(){ 
$('.tright4 img').attr('src',oldImage); 
}); 
});
$(document).ready(function(){ 
var newImage = new Image(); //预载入图片 
var oldImage = $('.tright5 img').attr('src'); 
newImage.src = 'img/06-.png'; 
$('.tright5 img').hover(function(){ //鼠标滑过图片切换 
$('.tright5 img').attr('src',newImage.src); 
}, 
function(){ 
$('.tright5 img').attr('src',oldImage); 
}); 
});
